JP5535155B2 - Flow path switching valve and fluid material discharge control device using the same - Google Patents

Flow path switching valve and fluid material discharge control device using the same Download PDF

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JP5535155B2
JP5535155B2 JP2011192486A JP2011192486A JP5535155B2 JP 5535155 B2 JP5535155 B2 JP 5535155B2 JP 2011192486 A JP2011192486 A JP 2011192486A JP 2011192486 A JP2011192486 A JP 2011192486A JP 5535155 B2 JP5535155 B2 JP 5535155B2
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discharge
seat surface
valve seat
flow path
chamber
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JP2013053684A (en
JP2013053684A5 (en
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雄太 大村
洋平 枝川
進 村田
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Canon Inc
Koganei Corp
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Koganei Corp
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Priority to JP2011192486A priority Critical patent/JP5535155B2/en
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Priority to DE201210108199 priority patent/DE102012108199A1/en
Priority to CN2012103265819A priority patent/CN103062437A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/056—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with ball-shaped valve members
    • F16K11/0565—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with ball-shaped valve members moving in a combined straight line and rotating movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86549—Selective reciprocation or rotation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86879—Reciprocating valve unit

Description

本発明は、グリスや液体等の流動性材料を吐出具に供給する供給流路に設けられる流路切換弁、およびそれを用いた吐出制御装置に関する。   The present invention relates to a flow path switching valve provided in a supply flow path for supplying a fluid material such as grease or liquid to a discharge tool, and a discharge control apparatus using the flow path switching valve.

電気製品や機械部品を被塗布部材としてこれらにグリス等の潤滑油が塗布されることがある。一方、電子部品を製造する工程においては、被加工部材を被塗布部材として薬液等の液体が塗布されることがある。潤滑油や液体等の非圧縮性の流動性材料を被塗布部材に吐出するために吐出装置が通常使用されている。吐出装置は流動性材料が収容された容器と吐出ノズルとの間に配置されて使用される。従来の吐出装置には、電磁弁が組み込まれた流路切換形態があるが、吐出装置には電磁弁等の部材が組み込まれているので、吐出装置は重量が大きく複雑な構造となっている。このため、従来の吐出装置はＸ，Ｙの２軸方向に駆動装置を用いて移動させるようにしたり、据え付け台に吐出装置を固定して被塗布物を移動させるようにしたりしている。   Lubricating oils such as grease may be applied to electrical appliances and machine parts as members to be applied. On the other hand, in a process of manufacturing an electronic component, a liquid such as a chemical solution may be applied using a member to be processed as a member to be applied. A discharge device is usually used to discharge an incompressible fluid material such as lubricating oil or liquid onto a member to be coated. The discharge device is used by being disposed between a container containing a flowable material and a discharge nozzle. The conventional discharge device has a flow path switching form in which an electromagnetic valve is incorporated. However, since the discharge device incorporates a member such as an electromagnetic valve, the discharge device has a heavy and complicated structure. . For this reason, the conventional discharge device is moved by using a driving device in the two axial directions of X and Y, or the discharge device is fixed to the mounting base and the object to be coated is moved.

吐出装置としては、ポンプ部材を弾性変形させてポンプ動作させるようにしたタイプがあるが、このタイプの吐出装置も構造が複雑となってしまう。ダイヤフラム等の弾性変形するポンプ部材を有する従来の吐出装置は、比較的吐出量が多い場合には好適であるが、１ｇあるいはそれ以下の微量の流動性材料を被塗布部材に塗布するには高精度に吐出量を制御することが困難であった。   As a discharge device, there is a type in which a pump member is elastically deformed to perform a pump operation, but this type of discharge device also has a complicated structure. A conventional discharge device having a pump member that is elastically deformed, such as a diaphragm, is suitable when the discharge amount is relatively large. However, it is difficult to apply a small amount of a fluid material of 1 g or less to a member to be coated. It was difficult to accurately control the discharge amount.

電気製品や機械部品に対して塗布される流動性材料の塗布量は、被塗布部材によって相違しており、上述のように流動性材料を１ｇ以下の塗布量とする場合もあれば、それよりも多量の流動性材料を塗布する場合がある。   The amount of flowable material applied to electrical products and machine parts varies depending on the member to be coated. As described above, the flowable material may be applied in an amount of 1 g or less. In some cases, a large amount of fluid material is applied.

潤滑油等の流動性材料を高精度で吐出具に向けて供給するために、容器内の流動性材料を制御流路内に充填注入し、制御流路内から吐出具に向けて流動性材料を吐出する構造の吐出装置が発明者により考えられた。そのような吐出装置とするには、流動性材料が収容された容器と吐出ノズルとの間の案内流路に制御流路を分岐させることになるので、三方弁を流路切換弁して使用することになる。特許文献１には、流路を切り換えるための三方弁が記載されている。   In order to supply fluid material such as lubricating oil to the discharge tool with high accuracy, the fluid material in the container is filled and injected into the control flow path, and the fluid material from the control flow path toward the discharge tool The inventor has considered a discharge device having a structure for discharging the water. In order to make such a discharge device, the control flow path is branched to the guide flow path between the container containing the flowable material and the discharge nozzle, so the three-way valve is used as a flow path switching valve. Will do. Patent Document 1 describes a three-way valve for switching a flow path.

特開２００２−１４７６２５号公報JP 2002-147625 A

特許文献１に記載されるように、球形状の弁体を有する三方弁は、弁箱内に形成されたガイド溝により弁体を移動させるようにしているので、ポートの開閉動作を行うには弁体を長い距離移動させる必要がある。このため、ポートを開閉したいタイミングと実際に弁体がポートの開閉を終了するまでの間に応答遅れが発生してしまう。それによって、吐出ノズルからの液だれが発生したり、サックバックの必要性が生じたり、流路内を流れる液体の量が多くなるため制御された量の液体（微少量）を１つの流路から他の流路に案内することが困難となる。   As described in Patent Document 1, the three-way valve having a spherical valve body is configured to move the valve body by a guide groove formed in the valve box. It is necessary to move the valve body for a long distance. For this reason, a response delay occurs between the timing when the port is desired to be opened and closed and the time when the valve element actually finishes opening and closing the port. As a result, dripping from the discharge nozzle occurs, the need for suck back occurs, or the amount of liquid flowing in the flow path increases, so a controlled amount of liquid (a small amount) is supplied to one flow path. Therefore, it becomes difficult to guide to other flow paths.

本発明の目的は、グリス等の流動性材料を液だれの発生がなく、サックバックの必要性を生じさせることなく、シール性や応答性に優れ、高精度の定量吐出制御をなし得る流路切換弁や吐出制御装置を提供することにある。   An object of the present invention is to provide a fluid flow material such as grease, which does not cause dripping, does not cause the need for suck back, has excellent sealing performance and responsiveness, and can perform high-precision quantitative discharge control. The object is to provide a switching valve and a discharge control device.

本発明の流路切換弁は、圧縮空気で加圧された流動性材料が供給される注入室および当該注入室に連なる円筒形状の外側弁座面と、前記外側弁座面の径方向内方に配置され内側の吐出室と外側の供給室とを仕切る円筒形状の仕切り部材と、前記仕切り部材の先端側部に設けられ前記外側弁座面との間で弁室を区画する内側弁座面と、前記供給室に連通するとともに吐出ロッドによって容積変化する制御流路が形成された吐出制御ブロックと、前記弁室内に配置され前記内側弁座面を開閉する基部、および当該基部に一体に設けられ弾性変形によって前記外側弁座面を開閉する環状フランジ部を有する弁体と、を有し、
前記弁体が前記内側弁座面に接触し、前記環状フランジ部が前記外側弁座面に当接する第１状態と、前記弁体が前記内側弁座面に当接し、前記環状フランジ部が前記外側弁座面から離れる第２状態と、前記弁体が前記内側弁座面から離れ、前記環状フランジ部が前記外側弁座面に当接する第３状態と、に作動し、流動性材料を吐出具に案内する案内流路を切り換える流路切換弁であって、
前記吐出ロッドが後退することで、前記弁体を前記第２状態として前記注入室から前記制御流路へ流動性材料を移動させる充填動作と、前記吐出ロッドが前進し、前記供給室の圧力が高まることで、前記弁体を前記第３状態として前記制御流路から前記吐出室への流動性材料を移動させて吐出口から吐出させる吐出動作と、が行われ、前記吐出動作後には前記吐出ロッドが後退位置に移動し、流動性材料が前記制御流路内に充填された状態で、加圧状態の流動性材料によって、前記弁体は前記第１状態に移行することを特徴とする。 The flow path switching valve of the present invention includes an injection chamber to which a fluid material pressurized with compressed air is supplied, a cylindrical outer valve seat surface connected to the injection chamber, and a radially inner side of the outer valve seat surface. An inner valve seat surface that divides the valve chamber between a cylindrical partition member that is disposed in the partition wall and partitions the inner discharge chamber and the outer supply chamber, and the outer valve seat surface that is provided at a front end side portion of the partition member A discharge control block having a control flow path communicating with the supply chamber and changing in volume by a discharge rod; a base disposed in the valve chamber for opening and closing the inner valve seat surface; and a base provided integrally with the base And a valve body having an annular flange portion that opens and closes the outer valve seat surface by elastic deformation,
A first state in which the valve body is in contact with the inner valve seat surface and the annular flange portion is in contact with the outer valve seat surface; and the valve body is in contact with the inner valve seat surface, and the annular flange portion is in the Operates into a second state in which the valve body is separated from the outer valve seat surface and a third state in which the valve body is separated from the inner valve seat surface and the annular flange is in contact with the outer valve seat surface, and discharges a fluid material. A flow path switching valve for switching a guide flow path to guide the tool,
By retreating the discharge rod, the valve body is set to the second state, a filling operation for moving the flowable material from the injection chamber to the control flow path, the discharge rod advances, and the pressure in the supply chamber is increased. by increasing the discharge operation for discharging the valve body from a discharge port by moving the flowable material into the discharge chamber from the control channel as the third state, is carried out, and the discharge after the discharge operation The valve body is moved to the first state by the fluid material under pressure when the rod is moved to the retracted position and the fluid material is filled in the control flow path .

本発明の流動材料の吐出制御装置は、圧縮空気で加圧された流動性材料が供給される注入室および当該注入室に連なる円筒形状の外側弁座面と、前記外側弁座面の径方向内方に配置され内側の吐出室と外側の供給室とを仕切る円筒形状の仕切り部材と、前記仕切り部材の先端側部に設けられ前記外側弁座面との間で弁室を区画する内側弁座面と、前記供給室に連通するとともに吐出ロッドによって容積変化する制御流路が形成された吐出制御ブロックと、前記吐出制御ブロックに設けられ、前記吐出ロッドを往復動する吐出手段と、前記弁室内に配置され前記内側弁座面を開閉する基部、および当該基部に一体に設けられ弾性変形によって前記外側弁座面を開閉する環状フランジ部を有する弁体と、を有し、
前記弁体が前記内側弁座面に接触し、前記環状フランジ部が前記外側弁座面に当接する第１状態と、前記弁体が前記内側弁座面に当接し、前記環状フランジ部が前記外側弁座面から離れる第２状態と、前記弁体が前記内側弁座面から離れ、前記環状フランジ部が前記外側弁座面に当接する第３状態と、に作動し、流動性材料を吐出具に吐出する流動性材料の吐出制御装置であって、
前記吐出ロッドが後退することで、前記弁体を前記第２状態として前記注入室から前記制御流路へ流動性材料を移動させる充填動作と、前記吐出ロッドが前進し、前記供給室の圧力が高まることで、前記弁体を前記第３状態として前記制御流路から前記吐出室への流動性材料を移動させて吐出口から吐出させる吐出動作と、が行われ、前記吐出動作後には前記吐出ロッドが後退位置に移動し、流動性材料が前記制御流路内に充填された状態で、加圧状態の流動性材料によって、前記弁体は前記第１状態に移行することを特徴とする。 The fluid material discharge control apparatus according to the present invention includes an injection chamber to which a fluid material pressurized with compressed air is supplied, a cylindrical outer valve seat surface connected to the injection chamber, and a radial direction of the outer valve seat surface. An inner valve that divides a valve chamber between a cylindrical partition member that is disposed inward and partitions an inner discharge chamber and an outer supply chamber, and the outer valve seat surface that is provided at a front end side portion of the partition member. A discharge control block formed with a seat surface, a control flow path communicating with the supply chamber and changing in volume by the discharge rod; a discharge means provided in the discharge control block for reciprocating the discharge rod; and the valve A base portion that is disposed indoors and opens and closes the inner valve seat surface, and a valve body that is provided integrally with the base portion and has an annular flange portion that opens and closes the outer valve seat surface by elastic deformation,
A first state in which the valve body is in contact with the inner valve seat surface and the annular flange portion is in contact with the outer valve seat surface; and the valve body is in contact with the inner valve seat surface, and the annular flange portion is in the Operates into a second state in which the valve body is separated from the outer valve seat surface and a third state in which the valve body is separated from the inner valve seat surface and the annular flange is in contact with the outer valve seat surface, and discharges a fluid material. A discharge control device for a flowable material discharged to a tool,
By retreating the discharge rod, the valve body is set to the second state, a filling operation for moving the flowable material from the injection chamber to the control flow path, the discharge rod advances, and the pressure in the supply chamber is increased. by increasing the discharge operation for discharging the valve body from a discharge port by moving the flowable material into the discharge chamber from the control channel as the third state, is carried out, and the discharge after the discharge operation The valve body is moved to the first state by the fluid material under pressure when the rod is moved to the retracted position and the fluid material is filled in the control flow path .

本発明の流動性材料の吐出制御装置は、前記吐出手段は前記吐出ロッドが往復動自在に収容された駆動ケースを有し、流動性材料が充填された前記制御流路を上下方向に向かせて前記吐出制御ブロックを配置した状態のもとで前記制御流路内に前記吐出ロッドを挿入し、前記制御流路内から流動性材料をオーバーフローさせて前記駆動ケースが前記吐出制御ブロックに取り付けられることを特徴とする。本発明の吐出制御装置は、前記吐出手段は前記吐出ロッドを駆動する駆動ロッドと当該駆動ロッドを軸方向に往復動自在に収容する駆動ケースとを有し、前記駆動ロッドの移動ストロークを調整するストローク調整部材を前記駆動ケースに設けることを特徴とする。   In the fluid material discharge control apparatus according to the present invention, the discharge means has a drive case in which the discharge rod is reciprocally accommodated, and the control flow path filled with the fluid material is directed vertically. The drive case is attached to the discharge control block by inserting the discharge rod into the control flow path under the state where the discharge control block is arranged and overflowing the flowable material from the control flow path. It is characterized by that. In the discharge control apparatus of the present invention, the discharge means includes a drive rod that drives the discharge rod and a drive case that accommodates the drive rod in a reciprocating manner in the axial direction, and adjusts a moving stroke of the drive rod. A stroke adjusting member is provided in the drive case.

本発明の流路切換弁は、一次側の圧力が制御流路側の圧力よりも高い場合には一次側と制御流路とを連通させ、制御流路と二次側流路を遮断する充填動作を行う。一次側の圧力と制御流路側の圧力が同じになると、一次側と制御流路を遮断し、制御流路と二次側を遮断するバランス状態となる。制御流路側の圧力が一次側よりも高くなると、一次側と制御流路を遮断した状態を保ちながら制御流路と二次側とを連通させて吐出動作を行う。特に、バランス状態から吐出動作に移行する際には、制御流路側の圧力が一次側の圧力よりもわずかに高くなるだけで、弁体の基部が内側弁座面を開放する。したがって、制御流路のわずかな容積変化に応じて流動性材料を二次側へ吐出させることができる。   The flow path switching valve of the present invention, when the pressure on the primary side is higher than the pressure on the control flow path side, allows the primary side and the control flow path to communicate with each other and shuts off the control flow path and the secondary flow path I do. When the pressure on the primary side and the pressure on the control flow path become the same, the primary side and the control flow path are blocked, and the control flow and the secondary side are blocked. When the pressure on the control channel side becomes higher than that on the primary side, the discharge operation is performed with the control channel and the secondary side communicating with each other while the primary side and the control channel are kept shut off. In particular, when shifting from the balance state to the discharge operation, the pressure on the control flow path side is slightly higher than the pressure on the primary side, and the base portion of the valve body opens the inner valve seat surface. Therefore, the fluid material can be discharged to the secondary side according to a slight volume change of the control flow path.

本発明の流路切換弁は、バランス状態から吐出動作に移行する際の弁体の移動量が非常に少ないので、吐出量が僅かであっても、吐出精度を高精度に設定することができる。   Since the flow path switching valve of the present invention has a very small amount of movement of the valve body when shifting from the balance state to the discharge operation, the discharge accuracy can be set with high accuracy even if the discharge amount is small. .

本発明の吐出制御装置は、小さく高感度の流路切換弁を有しているので小型軽量とすることができ、吐出装置を移動手段で自動的に移動させることなく、作業者が手動によって被塗布部材に流動性材料を吐出することができる。   Since the discharge control device of the present invention has a small and highly sensitive flow path switching valve, the discharge control device can be reduced in size and weight, and an operator manually covers the discharge device without moving the discharge device automatically by the moving means. A fluid material can be discharged onto the application member.

グリスの吐出装置を示す正面図である。It is a front view which shows the discharge apparatus of grease. 図１の一部を拡大して示す断面図である。It is sectional drawing which expands and shows a part of FIG. （Ａ）〜（Ｃ）はそれぞれ図２に示された弁体の開閉状態を示す図１の一部拡大断面図である。(A)-(C) are the partially expanded sectional views of FIG. 1 which each show the opening-and-closing state of the valve body shown by FIG. 組立手順を示すグリスの吐出装置の一部省略断面図である。FIG. 6 is a partially omitted cross-sectional view of a grease discharging device showing an assembling procedure. グリスの吐出装置の変形例を示す一部省略断面図である。FIG. 6 is a partially omitted cross-sectional view showing a modified example of the grease discharge device.

以下、本発明の実施の形態を図面に基づいて詳細に説明する。図１に示すグリスの吐出装置１０は、収納容器１１内に収容された流動性材料としてのグリスＧを、吐出具としての吐出ノズル１２に供給するために使用される。シリンジと言われる収納容器１１は流路切換弁１３の一次側に取り外し自在に連結され、流路切換弁１３の二次側に接続される吐出配管１４の先端部は吐出ノズル１２となっている。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A grease discharge device 10 shown in FIG. 1 is used for supplying grease G as a fluid material accommodated in a storage container 11 to a discharge nozzle 12 as a discharge tool. A storage container 11 called a syringe is detachably connected to the primary side of the flow path switching valve 13, and the distal end portion of the discharge pipe 14 connected to the secondary side of the flow path switching valve 13 is a discharge nozzle 12. .

図２に示されるように、流路切換弁１３は円筒形状の注入側部１５と、円筒形状の吐出側部１６とを有し、それぞれの注入側部１５と吐出側部１６の内部には、グリスＧを案内する案内流路が貫通形成されている。注入側部１５と吐出側部１６は、外径が相互にほぼ同一であり、ジョイント部１７に形成された取付孔に嵌合されて同軸となってジョイント部１７に取り付けられている。図２に示す流路切換弁１３は、注入側部１５と吐出側部１６とジョイント部１７を組み合わせることによりバルブケース１８が構成されている。ただし、これらの部分を有するバルブケース１８を一体に形成するようにしても良く、例えば、吐出側部１６とジョイント部１７の２つの部分を一体に形成するようにしても良い。   As shown in FIG. 2, the flow path switching valve 13 has a cylindrical injection side portion 15 and a cylindrical discharge side portion 16, and inside the injection side portion 15 and the discharge side portion 16, respectively. A guide channel for guiding the grease G is formed to penetrate therethrough. The injection side portion 15 and the discharge side portion 16 have substantially the same outer diameter, and are fitted to the attachment hole formed in the joint portion 17 so as to be coaxial and attached to the joint portion 17. In the flow path switching valve 13 shown in FIG. 2, a valve case 18 is configured by combining an injection side portion 15, a discharge side portion 16 and a joint portion 17. However, the valve case 18 having these portions may be integrally formed. For example, two portions of the discharge side portion 16 and the joint portion 17 may be integrally formed.

注入側部１５には注入室１５ａが形成されており、この注入室１５ａには収納容器１１からその内部のグリスＧが供給される。吐出側部１６には吐出室１６ａが形成されており、この吐出室１６ａは吐出ノズル１２に連通される。   An injection chamber 15 a is formed in the injection side portion 15, and the grease G inside thereof is supplied to the injection chamber 15 a from the storage container 11. A discharge chamber 16 a is formed in the discharge side portion 16, and the discharge chamber 16 a communicates with the discharge nozzle 12.

注入側部１５には注入室１５ａに括れ部１９を隔てて連なる円筒形状の外側弁座面２１が形成されている。吐出側部１６には外側弁座面２１の径方向内方に配置される円筒形状の仕切り部材２２が設けられている。この仕切り部材２２は先端側部が注入側部１５の内部に入り込んで外側弁座面２１と径方向に対向しており、仕切り部材２２はその内側の吐出室１６ａと外側の環状の供給室１７ａとに仕切るとともに外側弁座面２１との間で供給室１７ａに連なる弁室２３を形成している。弁室２３には注入室１５ａが連通している。   The injection side portion 15 is formed with a cylindrical outer valve seat surface 21 connected to the injection chamber 15a with the constricted portion 19 therebetween. The discharge side portion 16 is provided with a cylindrical partition member 22 disposed radially inward of the outer valve seat surface 21. The partition member 22 has a distal end portion that enters the inside of the injection side portion 15 and faces the outer valve seat surface 21 in the radial direction. The partition member 22 includes an inner discharge chamber 16a and an outer annular supply chamber 17a. A valve chamber 23 is formed between the outer valve seat surface 21 and the supply chamber 17a. An injection chamber 15 a communicates with the valve chamber 23.

仕切り部材２２の先端の開口端面は径方向の内側弁座面２４となっている。注入側部１５の括れ部１９と外側弁座面２１との間はテーパ面１９ａとなっており、内側弁座面２４は弁室２３を隔ててテーパ面１９ａに対向している。   The opening end surface at the tip of the partition member 22 is an inner valve seat surface 24 in the radial direction. A tapered surface 19 a is formed between the constricted portion 19 of the injection side portion 15 and the outer valve seat surface 21, and the inner valve seat surface 24 faces the tapered surface 19 a across the valve chamber 23.

弁室２３内には弁体２５が配置されており、弁体２５は中央部の基部２５ａと、この基部２５ａの外側の環状フランジ部２５ｂとを有し、弁体２５はゴム材料により一体に成形されている。基部２５ａは内側弁座面２４に接触する位置と離れる位置とに移動して内側弁座面２４を開閉し、環状フランジ部２５ｂは弾性変形して外側弁座面２１を開閉する。   A valve body 25 is disposed in the valve chamber 23. The valve body 25 has a central base portion 25a and an annular flange portion 25b outside the base portion 25a. The valve body 25 is integrally formed of a rubber material. Molded. The base portion 25a moves between a position in contact with the inner valve seat surface 24 and a position away from the inner valve seat surface 24 to open and close the inner valve seat surface 24, and the annular flange portion 25b elastically deforms to open and close the outer valve seat surface 21.

外側弁座面２１と円筒状の仕切り部材２２は同軸状に配置されている。従って、仕切り部材２２の先端側部に設けられる内側弁座面２４も外側弁座面２１に対して同軸となっている。弁体２５は図２，図３（Ａ）（Ｂ）（Ｃ）に示すように軸対称となっており、外側弁座面２１と円筒状の仕切り部材２２と内側弁座面２４に対して同軸状に配置されている。これらの同軸配置により、弁体２５の環状フランジ部２５ｂと基部２５ａはそれぞれ確実に外側弁座面２１と内側弁座面２４を閉じることができる。   The outer valve seat surface 21 and the cylindrical partition member 22 are arranged coaxially. Therefore, the inner valve seat surface 24 provided at the front end side portion of the partition member 22 is also coaxial with the outer valve seat surface 21. The valve body 25 is axially symmetric as shown in FIGS. 2, 3 </ b> A, 3 </ b> B, and 3 </ b> C, and with respect to the outer valve seat surface 21, the cylindrical partition member 22, and the inner valve seat surface 24. It is arranged coaxially. With these coaxial arrangements, the annular flange portion 25b and the base portion 25a of the valve body 25 can reliably close the outer valve seat surface 21 and the inner valve seat surface 24, respectively.

流路切換弁１３の注入側部１５には、収納容器１１が取り外し自在に装着されるホルダー２６が取り付けられている。一方、吐出側部１６には吐出ノズル１２の吐出配管１４が接続される継手２７が取り付けられている。   A holder 26 to which the storage container 11 is detachably attached is attached to the injection side portion 15 of the flow path switching valve 13. On the other hand, a joint 27 to which the discharge pipe 14 of the discharge nozzle 12 is connected is attached to the discharge side portion 16.

流路切換弁１３のバルブケース１８を構成するジョイント部１７には、仕切り部材２２の外側の環状の供給室１７ａに連通する連通孔２８が形成されており、この連通孔２８は供給室１７ａおよび吐出室１６ａに対して中心軸が直角となっている。ジョイント部１７には連通管３１の一端部がねじ結合され、連通管３１の他端部は吐出制御ブロック３２にねじ結合されている。吐出制御ブロック３２は連通管３１によりバルブケース１８に連結されている。吐出制御ブロック３２には注入側部１５と平行な方向に延びる制御流路３３が形成されており、この制御流路３３内には収納容器１１内のグリスＧが注入室１５ａ、弁室２３，供給室１７ａ、連通孔２８および連通管３１内の貫通孔３１ａを介して充填される。連通管３１とジョイント部１７の間をシールするために、シール部材３４ａがナット３５ａによりジョイント部１７の端面に締結されている。連通管３１と吐出制御ブロック３２の間をシールするために、シール部材３４ｂがナット３５ｂにより吐出制御ブロック３２の端面に締結されている。   The joint portion 17 constituting the valve case 18 of the flow path switching valve 13 is formed with a communication hole 28 communicating with the annular supply chamber 17a outside the partition member 22, and the communication hole 28 is connected to the supply chamber 17a and the communication chamber 28a. The central axis is perpendicular to the discharge chamber 16a. One end of the communication pipe 31 is screwed to the joint portion 17, and the other end of the communication pipe 31 is screwed to the discharge control block 32. The discharge control block 32 is connected to the valve case 18 by a communication pipe 31. A control flow path 33 extending in a direction parallel to the injection side portion 15 is formed in the discharge control block 32, and the grease G in the storage container 11 is filled in the control flow path 33 with the injection chamber 15 a, the valve chamber 23, The supply chamber 17a, the communication hole 28 and the through hole 31a in the communication pipe 31 are filled. In order to seal between the communication pipe 31 and the joint portion 17, a seal member 34a is fastened to the end surface of the joint portion 17 by a nut 35a. In order to seal between the communication pipe 31 and the discharge control block 32, a seal member 34b is fastened to the end surface of the discharge control block 32 by a nut 35b.

収納容器１１内のグリスＧを制御流路３３内に充填し、充填されたグリスＧを制御流路３３内から吐出室１６ａを介して吐出ノズル１２に供給するために、吐出制御ブロック３２には制御流路３３内を往復動する吐出ロッド３６が設けられている。この吐出ロッド３６は吐出制御ブロック３２に取り付けられる駆動ケース３７内に組み込まれている。   In order to fill the control channel 33 with the grease G in the storage container 11 and supply the filled grease G from the control channel 33 to the discharge nozzle 12 via the discharge chamber 16a, the discharge control block 32 includes A discharge rod 36 that reciprocates in the control flow path 33 is provided. The discharge rod 36 is incorporated in a drive case 37 attached to the discharge control block 32.

駆動ケース３７は円筒部３７ａとこの基端部側の底壁部３７ｂと先端部側の装着筒部３７ｃとを有している。装着筒部３７ｃには、吐出制御ブロック３２に設けられた雄ねじ３８ａにねじ結合される雌ねじ３８ｂが設けられている。円筒部３７ａ内に設けられたスリーブ４１には摺動部材４２ａが軸方向に往復動自在に挿入されており、この摺動部材４２ａの一端部には駆動ケース３７の底壁部３７ｂから外部に突出する駆動ロッド４２が設けられている。吐出ロッド３６は摺動部材４２ａに設けられており、駆動ロッド４２を軸方向に駆動すると、吐出ロッド３６が軸方向に駆動される。このように、駆動ロッド４２とこれを往復動自在に収容する駆動ケース３７は、吐出ロッド３６を往復動する吐出手段となっている。駆動ケース３７の先端部内にはカバー４３が組み込まれており、カバー４３の端壁部４３ａを吐出ロッド３６が貫通して吐出制御ブロック３２の制御流路３３内に入り込んでいる。   The drive case 37 has a cylindrical portion 37a, a bottom wall portion 37b on the proximal end side, and a mounting cylinder portion 37c on the distal end side. The mounting cylinder portion 37 c is provided with a female screw 38 b that is screw-coupled to a male screw 38 a provided in the discharge control block 32. A sliding member 42a is inserted into the sleeve 41 provided in the cylindrical portion 37a so as to be capable of reciprocating in the axial direction, and one end portion of the sliding member 42a is connected to the outside from the bottom wall portion 37b of the drive case 37. A projecting drive rod 42 is provided. The discharge rod 36 is provided on the sliding member 42a. When the drive rod 42 is driven in the axial direction, the discharge rod 36 is driven in the axial direction. In this way, the drive rod 42 and the drive case 37 that accommodates the drive rod 42 so as to reciprocate are discharge means that reciprocate the discharge rod 36. A cover 43 is incorporated in the front end portion of the drive case 37, and the discharge rod 36 passes through the end wall portion 43 a of the cover 43 and enters the control flow path 33 of the discharge control block 32.

カバー４３の端壁部４３ａと摺動部材４２ａの間には、圧縮コイルばね４４が装着されている。この圧縮コイルばね４４からなるばね部材により、吐出ロッド３６には制御流路３３内から離れる後退方向のばね力が加えられている。吐出ロッド３６が後退移動して制御流路３３内から外部に突出する方向に移動すると、制御流路３３の容積が拡大する。これに対し、吐出ロッド３６をばね力に抗して前進移動させ制御流路３３内に吐出ロッド３６を進入させると、制御流路３３の容積が縮小する。吐出ロッド３６と吐出制御ブロック３２との間をシールするために、吐出制御ブロック３２にはシール材４５が装着されている。シール材４５は止めリング４６により抜けが防止されている。   A compression coil spring 44 is mounted between the end wall portion 43a of the cover 43 and the sliding member 42a. A spring force in the backward direction away from the control flow path 33 is applied to the discharge rod 36 by the spring member formed of the compression coil spring 44. When the discharge rod 36 moves backward and moves in a direction protruding from the inside of the control flow path 33 to the outside, the volume of the control flow path 33 increases. On the other hand, when the discharge rod 36 is moved forward against the spring force to cause the discharge rod 36 to enter the control flow path 33, the volume of the control flow path 33 is reduced. In order to seal between the discharge rod 36 and the discharge control block 32, a seal material 45 is attached to the discharge control block 32. The sealing material 45 is prevented from coming off by a stop ring 46.

上述したグリスの吐出装置１０を用いて被塗布物に対してグリスＧを塗布する操作は、Ｘ，Ｙの２軸方向に移動する図示しない支持台に吐出装置１０を据え付けて行うようにしても良く、被塗布物を移動させて固定された支持台に据え付けられた吐出装置１０によりグリスＧを塗布するようにしても良い。さらには、作業者が吐出装置１０を手に持って塗布作業を行うようにしても良い。   The operation of applying the grease G to the object to be coated using the above-described grease discharge device 10 may be performed by installing the discharge device 10 on a support base (not shown) that moves in the X-axis and Y-axis directions. Alternatively, the grease G may be applied by the discharge device 10 which is installed on a fixed support base by moving the object to be coated. Furthermore, the worker may hold the discharge device 10 in his hand and perform the coating operation.

吐出装置１０を支持台に取り付けるために、駆動ケース３７の円筒部３７ａに形成された雄ねじ部にはナット４７がねじ結合されており、このナット４７により固定される図示しないブラケットにより支持台に吐出装置１０が取り付けられる。収納容器１１内のグリスＧが確実に注入室１５ａに供給されるように、収納容器１１にはその上端部から圧縮空気が図１において矢印で示すように供給されるようになっている。   In order to attach the discharge device 10 to the support base, a nut 47 is screwed to the male thread portion formed in the cylindrical portion 37 a of the drive case 37, and discharge is performed to the support base by a bracket (not shown) fixed by the nut 47. A device 10 is attached. In order to ensure that the grease G in the storage container 11 is supplied to the injection chamber 15a, compressed air is supplied to the storage container 11 from its upper end as shown by an arrow in FIG.

上述した吐出装置１０により吐出ノズル１２から被塗布物にグリスＧを塗布するには、まず、駆動ロッド４２が下端まで押し下げられて吐出ロッド３６が制御流路３３に入りきった状態から、収納容器１１内のグリスＧを制御流路３３内に充填する。充填動作は、圧縮コイルばね４４により吐出ロッド３６を後退移動させて制御流路３３の容積を膨張させることで行われる。また、吐出ロッド３６の径が大きい場合には圧縮コイルばね４４がなくても、収納容器１１のグリスＧに加えられる圧縮空気の圧力で吐出ロッド３６を後退移動して、以下の充填動作が行われる。この充填動作のときには、注入室１５ａから弁室２３にかけて圧力が連通孔２８から制御流路３３にかけての圧力よりも高いので、図３（Ａ）に示されるように、弁体２５の基部２５ａが内側弁座面２４に密着してこれを閉じ、環状フランジ部２５ｂが弾性変形して外側弁座面２１から離れてこれを開くことになる。制御流路３３へのグリスＧの充填動作においては、収納容器１１内には圧縮空気の圧力が加えられているので、吐出ロッド３６の充填ストロークに対応した量のグリスＧが制御流路３３内に充填される。   In order to apply the grease G to the application object from the discharge nozzle 12 by the discharge device 10 described above, first, the drive rod 42 is pushed down to the lower end and the discharge rod 36 enters the control flow path 33, and then the storage container. 11 is filled in the control flow path 33. The filling operation is performed by expanding the volume of the control flow path 33 by moving the discharge rod 36 backward by the compression coil spring 44. Further, when the diameter of the discharge rod 36 is large, even if the compression coil spring 44 is not provided, the discharge rod 36 is moved backward by the pressure of the compressed air applied to the grease G of the storage container 11, and the following filling operation is performed. Is called. In this filling operation, since the pressure from the injection chamber 15a to the valve chamber 23 is higher than the pressure from the communication hole 28 to the control flow path 33, as shown in FIG. The inner valve seat surface 24 is closely contacted and closed, and the annular flange portion 25b is elastically deformed to be separated from the outer valve seat surface 21 and opened. In the operation of filling the control flow path 33 with the grease G, the pressure of the compressed air is applied to the storage container 11, so that an amount of the grease G corresponding to the filling stroke of the discharge rod 36 is in the control flow path 33. Filled.

この状態のもとで、吐出ロッド３６が後退限位置まで後退移動して停止すると、注入室１５ａと供給室１７ａの圧力が釣り合ったバランス状態となる。このバランス状態となると、環状フランジ部２５ｂが弾性力で元の形に戻って外側弁座面２１に密着してこれを閉じるバランス動作が行われる。図２は吐出ロッド３６を後退限位置まで駆動して制御流路３３内へのグリスＧの充填が完了したバランス動作状態を示す。   Under this state, when the discharge rod 36 moves backward to the retreat limit position and stops, a balanced state is achieved in which the pressures of the injection chamber 15a and the supply chamber 17a are balanced. When this balanced state is reached, a balancing operation is performed in which the annular flange portion 25b returns to its original shape by an elastic force and comes into close contact with the outer valve seat surface 21 to close it. FIG. 2 shows a balance operation state in which the discharge rod 36 is driven to the retreat limit position and the filling of the grease G into the control flow path 33 is completed.

次いで、吐出ノズル１２に向けて制御流路３３内のグリスＧを吐出供給するには、吐出ロッド３６を前進移動させて制御流路３３を収縮させる。この供給動作は、吐出装置１０を自動的に作動させるときには、図示しない空気圧シリンダ等の往復動機構により駆動ロッド４２を前進移動させることにより行う。一方、手動で吐出装置１０を駆動する場合には、作業者が手作業で駆動ロッド４２を押し込むことにより供給動作が行われる。いずれの駆動方式においても、制御流路３３内へのグリスＧの供給量は、駆動ロッド４２の前進移動ストロークにより定まる。   Next, in order to discharge and supply the grease G in the control flow path 33 toward the discharge nozzle 12, the discharge rod 36 is moved forward to contract the control flow path 33. This supply operation is performed by moving the drive rod 42 forward by a reciprocating mechanism such as a pneumatic cylinder (not shown) when the discharge device 10 is automatically operated. On the other hand, when the discharge device 10 is driven manually, the supply operation is performed by the operator pushing the drive rod 42 manually. In any drive system, the supply amount of the grease G into the control flow path 33 is determined by the forward movement stroke of the drive rod 42.

吐出ロッド３６を前進移動させて供給動作が行われると、吐出ロッド３６による制御流路３３内のグリスＧの圧力が注入室１５ａ内のグリスＧの圧力よりも高くなるので、弁体２５の環状フランジ部２５ｂは外側弁座面２１に密着してこれを閉じた状態が維持される。一方、弁体２５は、環状フランジ部２５ｂを外側弁座面２１に摺動させながら注入室１５ａ側へわずかに移動し、その移動によって基部２５ａは内側弁座面２４からわずかに離れてこれを開く。これにより、制御流路３３内のグリスＧは吐出室１６ａ、継手２７、および吐出配管１４を通って吐出ノズル１２から被塗布物に対して吐出される。   When the supply operation is performed by moving the discharge rod 36 forward, the pressure of the grease G in the control flow path 33 by the discharge rod 36 becomes higher than the pressure of the grease G in the injection chamber 15a. The flange portion 25b is kept in close contact with the outer valve seat surface 21 and closed. On the other hand, the valve body 25 slightly moves toward the injection chamber 15a while sliding the annular flange portion 25b on the outer valve seat surface 21, and the base portion 25a is slightly separated from the inner valve seat surface 24 by the movement. open. As a result, the grease G in the control flow path 33 is discharged from the discharge nozzle 12 to the coating object through the discharge chamber 16a, the joint 27, and the discharge pipe 14.

図３（Ｂ），図３（Ｃ）はいずれもグリスを吐出ノズル１２から吐出させるグリス供給動作が行われているときの弁体２５の開閉状態を示す。弁体２５の基部２５ａの開度、つまり基部２５ａと内側弁座面２４との間の隙間は、環状フランジ部２５ｂがその弾性復元力により外側弁座面２１を閉じた状態のもとで、制御流路３３からの吐出室１６ａに向けて供給されるグリスＧの流量に応じて変化することになる。図３（Ｂ）は制御流路３３から吐出ノズル１２に供給されるグリスＧの供給速度が比較的速い場合を示し、図３（Ｃ）は供給されるグリスＧの供給速度が比較的遅い場合を示す。このように、弁体２５は軸方向移動により内側弁座面２４を開閉する基部２５ａと、弾性変形と弾性復元により外側弁座面２１を開閉するとともに基部２５ａの開度に応じて外側弁座面２１を摺動接触する環状フランジ部２５ｂとを有しているので、グリスＧの吐出速度が遅い場合でも吐出ロッド３６の供給動作ストロークに応じた量のグリスＧを吐出ノズル１２に供給することができる。   3B and 3C show the open / close state of the valve body 25 when the grease supply operation for discharging the grease from the discharge nozzle 12 is performed. The opening of the base portion 25a of the valve body 25, that is, the gap between the base portion 25a and the inner valve seat surface 24 is a state in which the annular flange portion 25b closes the outer valve seat surface 21 by its elastic restoring force. It changes in accordance with the flow rate of the grease G supplied from the control flow path 33 toward the discharge chamber 16a. 3B shows a case where the supply speed of the grease G supplied from the control flow path 33 to the discharge nozzle 12 is relatively high, and FIG. 3C shows a case where the supply speed of the grease G supplied is relatively low. Indicates. In this manner, the valve body 25 opens and closes the base portion 25a that opens and closes the inner valve seat surface 24 by axial movement, and opens and closes the outer valve seat surface 21 by elastic deformation and elastic restoration, and the outer valve seat according to the opening degree of the base portion 25a. Since the annular flange portion 25b that is in sliding contact with the surface 21 is provided, an amount of grease G corresponding to the supply operation stroke of the discharge rod 36 is supplied to the discharge nozzle 12 even when the discharge speed of the grease G is low. Can do.

吐出ロッド３６は、収納容器１１内のグリスＧを制御流路３３内に充填するときには、コイルばね４４のばね力により後退移動される。この後退移動時には収納容器１１内に加えられる圧縮空気の圧力により注入室１５ａにはグリスＧに充填方向の圧力が加えられているので、ばね力を大きくすることなく、吐出ロッド３６を後退限位置まで移動させることができる。   The discharge rod 36 is moved backward by the spring force of the coil spring 44 when the control passage 33 is filled with the grease G in the storage container 11. Since the pressure in the filling direction is applied to the grease G in the injection chamber 15a by the pressure of the compressed air applied in the storage container 11 during the backward movement, the discharge rod 36 is moved to the backward limit position without increasing the spring force. Can be moved to.

吐出ロッド３６は駆動ケース３７内に組み込まれている。駆動ケース３７の装着筒部３７ｃの雌ねじ３８ｂを吐出制御ブロック３２の雄ねじ３８ａにねじ結合することにより、吐出ロッド３６が組み込まれた駆動ケース３７を吐出制御ブロック３２に取り付けることができる。図４は駆動ケース３７を吐出制御ブロック３２に取り付ける直前の状態を示す図であり、グリスＧが連通管３１の貫通孔３１ａを介して制御流路３３内に充填された状態のもとで、装着筒部３７ｃの雌ねじ３８ｂを雄ねじ３８ａにねじ結合させる。つまり、初めて吐出装置１０を使用する際には、制御流路３３を上向きにし、駆動ケース３７を取り外した状態で収納容器１１をホルダー２６に取り付け、わずかな圧力の圧縮空気でグリスＧを注入室１５ａに供給し、バルブケース１８，連通管３１，シール材４５，止めリング４６まで充填する。グリスＧは止めリング４６からわずかに盛り上がった状態とする。これにより、これらの中に入っていた空気を止めリング４６の口元から大気に放出し、エア抜きが完了する。エア抜きが完了したところに図４に示すように駆動ケース３７を取り付けると、止めリング４６からわずかに盛り上がったグリスＧ内に吐出ロッド３６は入って行くので、空気が制御流路３３内に入り込むことがない。   The discharge rod 36 is incorporated in the drive case 37. The drive case 37 in which the discharge rod 36 is incorporated can be attached to the discharge control block 32 by screwing the female screw 38b of the mounting cylinder portion 37c of the drive case 37 to the male screw 38a of the discharge control block 32. FIG. 4 is a view showing a state immediately before the drive case 37 is attached to the discharge control block 32, and in a state where the grease G is filled in the control flow path 33 through the through hole 31 a of the communication pipe 31. The female screw 38b of the mounting cylinder portion 37c is screwed to the male screw 38a. That is, when the discharge device 10 is used for the first time, the storage channel 11 is attached to the holder 26 with the control flow path 33 facing upward and the drive case 37 removed, and the grease G is injected into the injection chamber with a slight amount of compressed air. 15a, and the valve case 18, the communication pipe 31, the sealing material 45, and the retaining ring 46 are filled. The grease G is slightly raised from the stop ring 46. As a result, the air contained therein is discharged from the mouth of the stop ring 46 to the atmosphere, and the air bleeding is completed. When the drive case 37 is attached as shown in FIG. 4 when the air venting is completed, the discharge rod 36 enters the grease G slightly raised from the stop ring 46, so that the air enters the control flow path 33. There is nothing.

装着筒部３７ｃを吐出制御ブロック３２に取り付けるときに、装着筒部３７ｃの内部つまり雌ねじ３８ｂの内部に入り込んでいる空気を排出するために、装着筒部３７ｃには排気孔５１が形成されている。さらに、カバー４３の端壁部４３ａには排出される空気を案内するために排気ガイド溝５２が径方向に形成されている。このように、駆動ケース３７を吐出制御ブロック３２に取り付ける際には、装着筒部３７ｃには排気孔５１が形成されており、端壁部４３ａの外面には排気ガイド溝５２が形成されているので、駆動ケース３７を吐出制御ブロック３２に取り付ける時には、空気が制御流路３３内に入り込むことを防止できる。また、吐出ロッド３６はコイルばね４４により引っ込んだ状態となっているので、その操作を容易に行うことができる。   When the mounting cylinder part 37c is attached to the discharge control block 32, an exhaust hole 51 is formed in the mounting cylinder part 37c in order to discharge air that has entered the inside of the mounting cylinder part 37c, that is, the internal thread 38b. . Further, an exhaust guide groove 52 is formed in the end wall portion 43a of the cover 43 in the radial direction in order to guide the discharged air. Thus, when the drive case 37 is attached to the discharge control block 32, the exhaust tube 51 is formed in the mounting cylinder portion 37c, and the exhaust guide groove 52 is formed on the outer surface of the end wall portion 43a. Therefore, when the drive case 37 is attached to the discharge control block 32, air can be prevented from entering the control flow path 33. Further, since the discharge rod 36 is retracted by the coil spring 44, the operation can be easily performed.

図５はグリスの吐出装置の変形例を示す一部省略断面図であり、図５にはグリスの吐出装置における図４と同様の部分が示されている。   FIG. 5 is a partially omitted cross-sectional view showing a modified example of the grease discharge device. FIG. 5 shows the same portion of the grease discharge device as in FIG.

この吐出装置においては、駆動ケース３７の円筒部３７ａに形成されたおねじ部には、円筒形状のストローク調整部材５３がねじ結合されている。このストローク調整部材５３は回転により駆動ケース３７の軸方向任意に位置決めすることができ、ナット４７をストローク調整部材５３に締め付けると、ストローク調整部材５３は所定の位置で固定される。駆動ロッド４２にはストローク調整部材５３の端面に当接する大径のストッパ５４が設けられている。駆動ロッド４２の往復動ストロークは、ストローク調整部材５３の端面とストッパ５４の距離により設定され、駆動ロッド４２の往復動ストロークにより吐出ロッド３６の往復動ストロークが設定される。このように、制御流路３３内へのグリスＧの供給量は、駆動ロッド４２の前進移動ストロークにより定まることになる、したがって、ストローク調整部材５３の駆動ケース３７に対する軸方向位置を調整することによって、吐出ロッド３６によるグリスＧの供給量を調整することができる。   In this discharge device, a cylindrical stroke adjusting member 53 is screwed to a male thread portion formed in the cylindrical portion 37 a of the drive case 37. The stroke adjusting member 53 can be arbitrarily positioned in the axial direction of the drive case 37 by rotation. When the nut 47 is fastened to the stroke adjusting member 53, the stroke adjusting member 53 is fixed at a predetermined position. The drive rod 42 is provided with a large-diameter stopper 54 that contacts the end surface of the stroke adjusting member 53. The reciprocating stroke of the drive rod 42 is set by the distance between the end face of the stroke adjusting member 53 and the stopper 54, and the reciprocating stroke of the discharge rod 36 is set by the reciprocating stroke of the driving rod 42. Thus, the supply amount of the grease G into the control flow path 33 is determined by the forward movement stroke of the drive rod 42. Therefore, by adjusting the axial position of the stroke adjustment member 53 with respect to the drive case 37. The supply amount of the grease G by the discharge rod 36 can be adjusted.

本発明は前記実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能である。   The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

１１ 収納容器
１２ 吐出ノズル
１３ 流路切換弁
１５ 注入側部
１５ａ 注入室
１６ 吐出側部
１６ａ 吐出室
１７ ジョイント部
１７ａ 供給室
１８ バルブケース
２１ 外側弁座面
２２ 仕切り部材
２３ 弁室
２４ 内側弁座面
２５ 弁体
２５ａ 基部
２５ｂ 環状フランジ部
３１ 連通管
３１ａ 貫通孔
３２ 吐出制御ブロック
３３ 制御流路
３６ 吐出ロッド
３７ 駆動ケース
３７ｃ 装着筒部
４２ 駆動ロッド
４４ 圧縮コイルばね
４６ 止めリング
５１ 排気孔
５２ 排気ガイド溝
Ｇ グリス DESCRIPTION OF SYMBOLS 11 Storage container 12 Discharge nozzle 13 Flow path switching valve 15 Injection side part 15a Injection chamber 16 Discharge side part 16a Discharge chamber 17 Joint part 17a Supply chamber 18 Valve case 21 Outer valve seat surface 22 Partition member 23 Valve chamber 24 Inner valve seat surface 25 Valve body 25a Base part 25b Annular flange part 31 Communication pipe 31a Through hole 32 Discharge control block 33 Control flow path 36 Discharge rod 37 Drive case 37c Mounting cylinder part 42 Drive rod 44 Compression coil spring 46 Stop ring 51 Exhaust hole 52 Exhaust guide groove G Grease

Claims (4)

圧縮空気で加圧された流動性材料が供給される注入室および当該注入室に連なる円筒形状の外側弁座面と、
前記外側弁座面の径方向内方に配置され内側の吐出室と外側の供給室とを仕切る円筒形状の仕切り部材と、
前記仕切り部材の先端側部に設けられ前記外側弁座面との間で弁室を区画する内側弁座面と、
前記供給室に連通するとともに吐出ロッドによって容積変化する制御流路が形成された吐出制御ブロックと、
前記弁室内に配置され前記内側弁座面を開閉する基部、および当該基部に一体に設けられ弾性変形によって前記外側弁座面を開閉する環状フランジ部を有する弁体と、
を有し、
前記弁体が前記内側弁座面に接触し、前記環状フランジ部が前記外側弁座面に当接する第１状態と、
前記弁体が前記内側弁座面に当接し、前記環状フランジ部が前記外側弁座面から離れる第２状態と、
前記弁体が前記内側弁座面から離れ、前記環状フランジ部が前記外側弁座面に当接する第３状態と、
に作動し、
流動性材料を吐出具に案内する案内流路を切り換える流路切換弁であって、
前記吐出ロッドが後退することで、前記弁体を前記第２状態として前記注入室から前記制御流路へ流動性材料を移動させる充填動作と、
前記吐出ロッドが前進し前記供給室の圧力が高まることで、前記弁体を前記第３状態として前記制御流路から前記吐出室への流動性材料を移動させて吐出口から吐出させる吐出動作と、
が行われ、前記吐出動作後には前記吐出ロッドが後退位置に移動し、流動性材料が前記制御流路内に充填された状態で、加圧状態の流動性材料によって、前記弁体は前記第１状態に移行することを特徴とする流路切換弁。 An injection chamber to which a flowable material pressurized with compressed air is supplied, and a cylindrical outer valve seat surface connected to the injection chamber;
A cylindrical partition member that is arranged radially inward of the outer valve seat surface and partitions the inner discharge chamber and the outer supply chamber;
An inner valve seat surface that is provided at a distal end side portion of the partition member and partitions a valve chamber with the outer valve seat surface;
A discharge control block in which a control flow path communicating with the supply chamber and changing in volume by a discharge rod is formed;
A valve body having a base portion disposed in the valve chamber for opening and closing the inner valve seat surface, and an annular flange portion integrally provided in the base portion for opening and closing the outer valve seat surface by elastic deformation;
Have
A first state in which the valve body is in contact with the inner valve seat surface, and the annular flange portion is in contact with the outer valve seat surface;
A second state in which the valve body abuts on the inner valve seat surface, and the annular flange portion is separated from the outer valve seat surface;
A third state in which the valve body is separated from the inner valve seat surface, and the annular flange portion is in contact with the outer valve seat surface;
Operated on
A flow path switching valve for switching a guide flow path for guiding a flowable material to a discharge tool,
A refilling operation for moving the flowable material from the injection chamber to the control flow path with the valve body in the second state by retreating the discharge rod;
A discharge operation in which the discharge rod moves forward and the pressure in the supply chamber is increased, so that the valve body is moved to the third state to move the flowable material from the control flow path to the discharge chamber and discharge from the discharge port. ,
After the discharge operation, the discharge rod moves to the retracted position, and the valve body is moved by the pressurized flowable material while the flowable material is filled in the control flow path . 1. A flow path switching valve that shifts to one state. 圧縮空気で加圧された流動性材料が供給される注入室および当該注入室に連なる円筒形状の外側弁座面と、
前記外側弁座面の径方向内方に配置され内側の吐出室と外側の供給室とを仕切る円筒形状の仕切り部材と、
前記仕切り部材の先端側部に設けられ前記外側弁座面との間で弁室を区画する内側弁座面と、
前記供給室に連通するとともに吐出ロッドによって容積変化する制御流路が形成された吐出制御ブロックと、
前記吐出制御ブロックに設けられ、前記吐出ロッドを往復動する吐出手段と、
前記弁室内に配置され前記内側弁座面を開閉する基部、および当該基部に一体に設けられ弾性変形によって前記外側弁座面を開閉する環状フランジ部を有する弁体と、
を有し、
前記弁体が前記内側弁座面に接触し、前記環状フランジ部が前記外側弁座面に当接する第１状態と、
前記弁体が前記内側弁座面に当接し、前記環状フランジ部が前記外側弁座面から離れる第２状態と、
前記弁体が前記内側弁座面から離れ、前記環状フランジ部が前記外側弁座面に当接する第３状態と、
に作動し、
流動性材料を吐出具に吐出する流動性材料の吐出制御装置であって、
前記吐出ロッドが後退することで、前記弁体を前記第２状態として前記注入室から前記制御流路へ流動性材料を移動させる充填動作と、
前記吐出ロッドが前進し、前記供給室の圧力が高まることで、前記弁体を前記第３状態として前記制御流路から前記吐出室への流動性材料を移動させて吐出口から吐出させる吐出動作と、
が行われ、前記吐出動作後には前記吐出ロッドが後退位置に移動し、流動性材料が前記制御流路内に充填された状態で、加圧状態の流動性材料によって、前記弁体は前記第１状態に移行することを特徴とする流動性材料の吐出制御装置。 An injection chamber to which a flowable material pressurized with compressed air is supplied, and a cylindrical outer valve seat surface connected to the injection chamber;
A cylindrical partition member that is arranged radially inward of the outer valve seat surface and partitions the inner discharge chamber and the outer supply chamber;
An inner valve seat surface that is provided at a distal end side portion of the partition member and partitions a valve chamber with the outer valve seat surface;
A discharge control block in which a control flow path communicating with the supply chamber and changing in volume by a discharge rod is formed;
A discharge means provided in the discharge control block for reciprocating the discharge rod;
A valve body having a base portion disposed in the valve chamber for opening and closing the inner valve seat surface, and an annular flange portion integrally provided in the base portion for opening and closing the outer valve seat surface by elastic deformation;
Have
A first state in which the valve body is in contact with the inner valve seat surface, and the annular flange portion is in contact with the outer valve seat surface;
A second state in which the valve body abuts on the inner valve seat surface, and the annular flange portion is separated from the outer valve seat surface;
A third state in which the valve body is separated from the inner valve seat surface, and the annular flange portion is in contact with the outer valve seat surface;
Operated on
A discharge control device for a flowable material that discharges the flowable material to a discharge tool,
A refilling operation for moving the flowable material from the injection chamber to the control flow path with the valve body in the second state by retreating the discharge rod;
As the discharge rod moves forward and the pressure in the supply chamber increases, the discharge operation is performed by moving the flowable material from the control flow path to the discharge chamber with the valve body in the third state and discharging from the discharge port. When,
After the discharge operation, the discharge rod moves to the retracted position, and the valve body is moved by the pressurized flowable material while the flowable material is filled in the control flow path . A flowable material discharge control device, wherein the flowable material transitions to one state. 請求項２記載の流動性材料の吐出制御装置において、前記吐出手段は前記吐出ロッドが往復動自在に収容された駆動ケースを有し、流動性材料が充填された前記制御流路を上方向に向かせて前記吐出制御ブロックを配置した状態のもとで前記制御流路内に前記吐出ロッドを挿入し、前記制御流路内から流動性材料をオーバーフローさせて前記駆動ケースが前記吐出制御ブロックに取り付けられることを特徴とする吐出制御装置。   3. The fluidity material discharge control device according to claim 2, wherein the discharge means has a drive case in which the discharge rod is reciprocally accommodated, and the control channel filled with the flowable material is directed upward. The discharge rod is inserted into the control flow path with the discharge control block disposed so that the flowable material overflows from the control flow path, and the drive case becomes the discharge control block. A discharge control device which is attached. 請求項２記載の流動性材料の吐出制御装置において、前記吐出手段は前記吐出ロッドを駆動する駆動ロッドと当該駆動ロッドを軸方向に往復動自在に収容する駆動ケースとを有し、前記駆動ロッドの移動ストロークを調整するストローク調整部材を前記駆動ケースに設けることを特徴とする流動性材料の吐出制御装置。   3. The fluidity material discharge control apparatus according to claim 2, wherein the discharge means includes a drive rod for driving the discharge rod and a drive case for reciprocally moving the drive rod in an axial direction. A fluidity material discharge control device, wherein a stroke adjusting member for adjusting a moving stroke of the fluid is provided in the drive case.
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